GAGG-based gamma-ray detector for in-situ ocean radiation monitoring

GAGG-based gamma-ray detector for in-situ ocean radiation monitoring
이승은; 이재성; 고근배; 백승재; 서정민; 김수미
KIOST Author(s)
Baek, Seungjae(백승재)Seo, Jungmin(서정민)Kim, Soo Mee(김수미)
Publication Year
Frequent monitoring of ocean radiation level in desired sites is required to manage the safety of nuclear power plant operation and rapidly deal with radiation discharge into the ocean. A typical method to measure ocean radiation is to analyze the sampled sea water or sediments in the laboratory [1-2]. However, this method is slow, bulky, and only applicable to restricted ocean sites.
We are developing a novel in-situ ocean radiation monitoring system that features real-time detection of ocean radiation level based on remote ultra-high frequency communication. For gamma-ray detection, we selected Gadolinium Aluminum Gallium Garnet (GAGG) crystal because GAGG features excellent energy resolution, non-hygroscopic property, and no intrinsic activity [3]. Considering the challenge in gamma-ray detection efficiency due to substantial attenuation by water, a large-sized GAGG crystal was used.
We first calibrated the gamma-ray detector consisted of GAGG crystal and silicon multiplier (SiPM). After the calibration, we conducted a water tank experiment of the system to evaluate the feasibility of the detector for ocean radiation monitoring system, targeting Cs-137 detection.
Bibliographic Citation
IEEE Nuclear Science Symposium and Medical Imaging Conference, pp.1 - 2, 2019
IEEE Nuclear & Plasma Sciences Society
IEEE Nuclear & Plasma Sciences Society
Related Researcher
Research Interests

Computer System,System Software,Storage System,컴퓨터 시스템,시스템 소프트웨어,스토리지 시스템

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